home-assistant: ignore install method deprecation

pkgs/servers/home-assistant/default.nix

@@ -317,6 +317,9 @@ python3Packages.buildPythonApplication rec {
     # No scaring our users about not running in a docker or a venv
     ./patches/pythonpath-is-a-venv.patch
 
+    # No scaring our users about our install method
+    ./patches/nixos-was-never-supported.patch
+
     # Patch path to ffmpeg binary
     (replaceVars ./patches/ffmpeg-path.patch {
       ffmpeg = "${lib.getExe ffmpeg-headless}";

pkgs/servers/home-assistant/patches/nixos-was-never-supported.patch

@@ -0,0 +1,13 @@
+diff --git a/homeassistant/components/homeassistant/__init__.py b/homeassistant/components/homeassistant/__init__.py
+index 54c6454167b..026fda54578 100644
+--- a/homeassistant/components/homeassistant/__init__.py
++++ b/homeassistant/components/homeassistant/__init__.py
+@@ -420,7 +420,7 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:  # noqa:
+ 
+         installation_type = info["installation_type"][15:]
+         if installation_type in {"Core", "Container"}:
+-            deprecated_method = installation_type == "Core"
++            deprecated_method = False
+             bit32 = _is_32_bit()
+             arch = info["arch"]
+             if bit32 and installation_type == "Container":

pkgs/servers/home-assistant/tests.nix

@@ -130,6 +130,10 @@ let
       # [2026.6.1] AssertionError: assert <ConfigEntryState.LOADED: 'loaded'> is <ConfigEntryState.SETUP_RETRY: 'setup_retry'>
       "test_usb_device_reactivity"
     ];
+    homeassistant = [
+      # disabled via nixos-was-never-supported.patch
+      "test_deprecated_installation_issue_core"
+    ];
     opendisplay = [
       # [2026.6.0] Failed: Description not found for placeholder `reason` in component.opendisplay.exceptions.device_not_found.message
       # https://github.com/home-assistant/core/pull/172909